Spectroscopy near the proton drip line in the deformed A=130 mass region: The Pr-126 nucleus - art. no. 044303

Authors
Petrache, CM Nespolo, M Brant, S Lo Bianco, G Bazzacco, D Lunardi, S Spolaore, P Axiotis, M Blasi, N de Angelis, G Kroll, T Marginean, N Martinez, T Menegazzo, R Napoli, DR Quintana, B Saltarelli, A Ventura, A Vretenar, D
Citation
Cm. Petrache et al., Spectroscopy near the proton drip line in the deformed A=130 mass region: The Pr-126 nucleus - art. no. 044303, PHYS REV C, 6404(4), 2001, pp. 4303
Citations number
37
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW C
ISSN journal
05562813 → ACNP
Volume
6404
Issue
4
Year of publication
2001
Database
ISI
SICI code
0556-2813(200110)6404:4<4303:SNTPDL>2.0.ZU;2-O
Abstract
The near proton drip-line nucleus Pr-126 was studied via in-beam gamma -ray spectroscopy using the Ca-40 +Mo-92 reaction at 190 MeV. We observed for t he first time excited states above the known isomer in this nucleus, up to spin 31 (h) over bar. The observed band is assigned to a pih(11/2)circle ti mes vh(11/2) configuration and is discussed in the framework of the interac ting boson-fermion-fermion model. The calculations and the experimental inf ormation suggest a spin 8(+) for the lowest observed state. With such a spi n assignment the moment of inertia of Pr-126 gets larger than in the heavie r Pr isotopes, suggesting a sudden change in deformation close to the proto n drip line.